Coal-stove



J. KELLER.

Heating Stove.

7 5 m L M 3 S h 5 M p S l I w 1 J D) a r Z I H o N PETERS. Pholu-Lilhognpher. Washinpwl). 1c.

groove L is formed.

UNITED STATES PATENT OFFICE.

JOHN G. KELLER, OF PHILADELPHIA, PENNSYLVANIA.

GOAL-STOVE.

Specification of Letters Patent No. 17,283, dated May 12, 1857.

To all whom it may concern:

Be it known that 1, JOHN C. KELLER, of Philadelphia, in thecounty of Philadelphia, State of Pennsylvania, have invented a new and useful Improvement in Gas-Burning Stoves; and I do hereby declarethat the following isa full, clear, and exact description of the same, reference being had to the accompanying drawings and to the letters of reference marked thereon.

The nature of this invention consists in a new method of introducing hot air into the fire chamber of a stove above the coal by means of tubes.

To enable others skilled in the art to make and use myinvention, I will proceed to describe its construction and operation.

On reference to the drawings which form a part of this specification, Figure 1, is a sectional elevation of an ordinary gas burning stove with my improvements attached. Fig. 2, is a plan of the same on the line 12 (Fig, 1.) In this view the body of the stove is exaggerated in order to show other parts, more distinctly. Fig. 3, is a View of the cylinder, detached, the band and tube being removed.

' Similar letters refer to the same parts throughout the several views.

Y is the base of the stove.

Z is a chamber.

X is an opening for the admission of air to the chamber Z.

T is a slide by which the opening X is opened or closed to regulate the fire by means of the pin R attached to the slide T. The cap Q is adjusted to a corresponding collar attached to the base Y.

, A is the grate.

P is the cylinder, which is surrounded by a metallic band M. In the cylinder P, a Intersecting this groove are six other grooves S. In front of the cylinder and extending below the groove L, is a recess N, opposite to whlch, a hole 0 is formed in the band M.

D is a hole in the body B of the stove, through which the oxygen enters the chamber J, after which it follows the direction indicated by arrows. Upon entering the recess N, it ascends to the groove L, from which it enters the fire chamber or interior of the cylinder P, by means of the tubes K,

which are fitted to the grooves S. The tubes K are curved near their upper ends forming a right angle. Their horizontal portions are fitted in notches cut in the top ofthe cylinder. In the bottom of these notches, before the tubes are adjusted, a suflicient quantity of fire proof cement is deposited to insure an air tight joint under the tubes. The space, if there be any, between the cylinder P, and band M, must also be filled with cement. The top of the chamber J, Fig. 2, is closed by fire proof cement I, Fig. 1. The opening W is closed by a sheet of mica.

The stove is supplied with fuel through the opening E formed in the center of the top plate of the stove. The opening E is closed by a lid G.

Attached to the top plate of the stove, and extending some six inches downward therefrom, is a ring .H, which encircles the openings E. Pipe is attached to the stove by means of the collar C.

. The oxygen after entering the chamber J, which is about 3; inch in width, passes half around the cylinder P, and enters the groove L, and is brought in contact with the carbonic gas in the fire chamber by the tubes K,

upon which combustion takes place, causing jets of flame to extend some six inches above the openings in the upper ends of the tubes.

The saving of fuel effected by stoves of this construction is about fifty per cent.

Stoves provided with the hole lD, chamber J, and perforations in the cylinder P, some 4 inches below its top, are well known and in common use. I therefore do not claim the parts to which the letters D, J, and P refer; but

What I do claim, and desire to secure by Letters Patent, is- The arrangement of the perforations D, and O, in the cylinders B, and M, situated opposite to each other, so that the current of air entering D, shall'be divided and heated, by passing half around the cylinder M, previous to entering the groove L, through the perforation O, in the manner substantially as described.

JOHN C. KELLER. Witnesses:

GEO. C. GEYER,

CHARLES THOMAS. 

